| 1 | /* |
| 2 | * SCSI helpers |
| 3 | * |
| 4 | * Copyright 2017 Red Hat, Inc. |
| 5 | * |
| 6 | * Authors: |
| 7 | * Fam Zheng <famz@redhat.com> |
| 8 | * Paolo Bonzini <pbonzini@redhat.com> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the Free |
| 12 | * Software Foundation; either version 2 of the License, or (at your option) |
| 13 | * any later version. |
| 14 | */ |
| 15 | |
| 16 | #include "qemu/osdep.h" |
| 17 | #include "scsi/constants.h" |
| 18 | #include "scsi/utils.h" |
| 19 | #include "qemu/bswap.h" |
| 20 | |
| 21 | uint32_t scsi_data_cdb_xfer(uint8_t *buf) |
| 22 | { |
| 23 | if ((buf[0] >> 5) == 0 && buf[4] == 0) { |
| 24 | return 256; |
| 25 | } else { |
| 26 | return scsi_cdb_xfer(buf); |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | uint32_t scsi_cdb_xfer(uint8_t *buf) |
| 31 | { |
| 32 | switch (buf[0] >> 5) { |
| 33 | case 0: |
| 34 | return buf[4]; |
| 35 | case 1: |
| 36 | case 2: |
| 37 | return lduw_be_p(&buf[7]); |
| 38 | case 4: |
| 39 | return ldl_be_p(&buf[10]) & 0xffffffffULL; |
| 40 | case 5: |
| 41 | return ldl_be_p(&buf[6]) & 0xffffffffULL; |
| 42 | default: |
| 43 | return -1; |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | uint64_t scsi_cmd_lba(SCSICommand *cmd) |
| 48 | { |
| 49 | uint8_t *buf = cmd->buf; |
| 50 | uint64_t lba; |
| 51 | |
| 52 | switch (buf[0] >> 5) { |
| 53 | case 0: |
| 54 | lba = ldl_be_p(&buf[0]) & 0x1fffff; |
| 55 | break; |
| 56 | case 1: |
| 57 | case 2: |
| 58 | case 5: |
| 59 | lba = ldl_be_p(&buf[2]) & 0xffffffffULL; |
| 60 | break; |
| 61 | case 4: |
| 62 | lba = ldq_be_p(&buf[2]); |
| 63 | break; |
| 64 | default: |
| 65 | lba = -1; |
| 66 | |
| 67 | } |
| 68 | return lba; |
| 69 | } |
| 70 | |
| 71 | int scsi_cdb_length(uint8_t *buf) |
| 72 | { |
| 73 | int cdb_len; |
| 74 | |
| 75 | switch (buf[0] >> 5) { |
| 76 | case 0: |
| 77 | cdb_len = 6; |
| 78 | break; |
| 79 | case 1: |
| 80 | case 2: |
| 81 | cdb_len = 10; |
| 82 | break; |
| 83 | case 4: |
| 84 | cdb_len = 16; |
| 85 | break; |
| 86 | case 5: |
| 87 | cdb_len = 12; |
| 88 | break; |
| 89 | default: |
| 90 | cdb_len = -1; |
| 91 | } |
| 92 | return cdb_len; |
| 93 | } |
| 94 | |
| 95 | SCSISense scsi_parse_sense_buf(const uint8_t *in_buf, int in_len) |
| 96 | { |
| 97 | bool fixed_in; |
| 98 | SCSISense sense; |
| 99 | |
| 100 | assert(in_len > 0); |
| 101 | fixed_in = (in_buf[0] & 2) == 0; |
| 102 | if (fixed_in) { |
| 103 | if (in_len < 14) { |
| 104 | return SENSE_CODE(IO_ERROR); |
| 105 | } |
| 106 | sense.key = in_buf[2]; |
| 107 | sense.asc = in_buf[12]; |
| 108 | sense.ascq = in_buf[13]; |
| 109 | } else { |
| 110 | if (in_len < 4) { |
| 111 | return SENSE_CODE(IO_ERROR); |
| 112 | } |
| 113 | sense.key = in_buf[1]; |
| 114 | sense.asc = in_buf[2]; |
| 115 | sense.ascq = in_buf[3]; |
| 116 | } |
| 117 | |
| 118 | return sense; |
| 119 | } |
| 120 | |
| 121 | int scsi_build_sense_buf(uint8_t *out_buf, size_t size, SCSISense sense, |
| 122 | bool fixed_sense) |
| 123 | { |
| 124 | int len; |
| 125 | uint8_t buf[SCSI_SENSE_LEN] = { 0 }; |
| 126 | |
| 127 | if (fixed_sense) { |
| 128 | buf[0] = 0x70; |
| 129 | buf[2] = sense.key; |
| 130 | buf[7] = 10; |
| 131 | buf[12] = sense.asc; |
| 132 | buf[13] = sense.ascq; |
| 133 | len = 18; |
| 134 | } else { |
| 135 | buf[0] = 0x72; |
| 136 | buf[1] = sense.key; |
| 137 | buf[2] = sense.asc; |
| 138 | buf[3] = sense.ascq; |
| 139 | len = 8; |
| 140 | } |
| 141 | len = MIN(len, size); |
| 142 | memcpy(out_buf, buf, len); |
| 143 | return len; |
| 144 | } |
| 145 | |
| 146 | int scsi_build_sense(uint8_t *buf, SCSISense sense) |
| 147 | { |
| 148 | return scsi_build_sense_buf(buf, SCSI_SENSE_LEN, sense, true); |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | * Predefined sense codes |
| 153 | */ |
| 154 | |
| 155 | /* No sense data available */ |
| 156 | const struct SCSISense sense_code_NO_SENSE = { |
| 157 | .key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 |
| 158 | }; |
| 159 | |
| 160 | /* LUN not ready, Manual intervention required */ |
| 161 | const struct SCSISense sense_code_LUN_NOT_READY = { |
| 162 | .key = NOT_READY, .asc = 0x04, .ascq = 0x03 |
| 163 | }; |
| 164 | |
| 165 | /* LUN not ready, Medium not present */ |
| 166 | const struct SCSISense sense_code_NO_MEDIUM = { |
| 167 | .key = NOT_READY, .asc = 0x3a, .ascq = 0x00 |
| 168 | }; |
| 169 | |
| 170 | /* LUN not ready, medium removal prevented */ |
| 171 | const struct SCSISense sense_code_NOT_READY_REMOVAL_PREVENTED = { |
| 172 | .key = NOT_READY, .asc = 0x53, .ascq = 0x02 |
| 173 | }; |
| 174 | |
| 175 | /* Hardware error, internal target failure */ |
| 176 | const struct SCSISense sense_code_TARGET_FAILURE = { |
| 177 | .key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 |
| 178 | }; |
| 179 | |
| 180 | /* Illegal request, invalid command operation code */ |
| 181 | const struct SCSISense sense_code_INVALID_OPCODE = { |
| 182 | .key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 |
| 183 | }; |
| 184 | |
| 185 | /* Illegal request, LBA out of range */ |
| 186 | const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { |
| 187 | .key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 |
| 188 | }; |
| 189 | |
| 190 | /* Illegal request, Invalid field in CDB */ |
| 191 | const struct SCSISense sense_code_INVALID_FIELD = { |
| 192 | .key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 |
| 193 | }; |
| 194 | |
| 195 | /* Illegal request, Invalid field in parameter list */ |
| 196 | const struct SCSISense sense_code_INVALID_PARAM = { |
| 197 | .key = ILLEGAL_REQUEST, .asc = 0x26, .ascq = 0x00 |
| 198 | }; |
| 199 | |
| 200 | /* Illegal request, Invalid value in parameter list */ |
| 201 | const struct SCSISense sense_code_INVALID_PARAM_VALUE = { |
| 202 | .key = ILLEGAL_REQUEST, .asc = 0x26, .ascq = 0x01 |
| 203 | }; |
| 204 | |
| 205 | /* Illegal request, Parameter list length error */ |
| 206 | const struct SCSISense sense_code_INVALID_PARAM_LEN = { |
| 207 | .key = ILLEGAL_REQUEST, .asc = 0x1a, .ascq = 0x00 |
| 208 | }; |
| 209 | |
| 210 | /* Illegal request, LUN not supported */ |
| 211 | const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { |
| 212 | .key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 |
| 213 | }; |
| 214 | |
| 215 | /* Illegal request, Saving parameters not supported */ |
| 216 | const struct SCSISense sense_code_SAVING_PARAMS_NOT_SUPPORTED = { |
| 217 | .key = ILLEGAL_REQUEST, .asc = 0x39, .ascq = 0x00 |
| 218 | }; |
| 219 | |
| 220 | /* Illegal request, Incompatible medium installed */ |
| 221 | const struct SCSISense sense_code_INCOMPATIBLE_FORMAT = { |
| 222 | .key = ILLEGAL_REQUEST, .asc = 0x30, .ascq = 0x00 |
| 223 | }; |
| 224 | |
| 225 | /* Illegal request, medium removal prevented */ |
| 226 | const struct SCSISense sense_code_ILLEGAL_REQ_REMOVAL_PREVENTED = { |
| 227 | .key = ILLEGAL_REQUEST, .asc = 0x53, .ascq = 0x02 |
| 228 | }; |
| 229 | |
| 230 | /* Illegal request, Invalid Transfer Tag */ |
| 231 | const struct SCSISense sense_code_INVALID_TAG = { |
| 232 | .key = ILLEGAL_REQUEST, .asc = 0x4b, .ascq = 0x01 |
| 233 | }; |
| 234 | |
| 235 | /* Command aborted, I/O process terminated */ |
| 236 | const struct SCSISense sense_code_IO_ERROR = { |
| 237 | .key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 |
| 238 | }; |
| 239 | |
| 240 | /* Command aborted, I_T Nexus loss occurred */ |
| 241 | const struct SCSISense sense_code_I_T_NEXUS_LOSS = { |
| 242 | .key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 |
| 243 | }; |
| 244 | |
| 245 | /* Command aborted, Logical Unit failure */ |
| 246 | const struct SCSISense sense_code_LUN_FAILURE = { |
| 247 | .key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 |
| 248 | }; |
| 249 | |
| 250 | /* Command aborted, Overlapped Commands Attempted */ |
| 251 | const struct SCSISense sense_code_OVERLAPPED_COMMANDS = { |
| 252 | .key = ABORTED_COMMAND, .asc = 0x4e, .ascq = 0x00 |
| 253 | }; |
| 254 | |
| 255 | /* Command aborted, LUN Communication Failure */ |
| 256 | const struct SCSISense sense_code_LUN_COMM_FAILURE = { |
| 257 | .key = ABORTED_COMMAND, .asc = 0x08, .ascq = 0x00 |
| 258 | }; |
| 259 | |
| 260 | /* Command aborted, LUN does not respond to selection */ |
| 261 | const struct SCSISense sense_code_LUN_NOT_RESPONDING = { |
| 262 | .key = ABORTED_COMMAND, .asc = 0x05, .ascq = 0x00 |
| 263 | }; |
| 264 | |
| 265 | /* Command aborted, Command Timeout during processing */ |
| 266 | const struct SCSISense sense_code_COMMAND_TIMEOUT = { |
| 267 | .key = ABORTED_COMMAND, .asc = 0x2e, .ascq = 0x02 |
| 268 | }; |
| 269 | |
| 270 | /* Command aborted, Commands cleared by device server */ |
| 271 | const struct SCSISense sense_code_COMMAND_ABORTED = { |
| 272 | .key = ABORTED_COMMAND, .asc = 0x2f, .ascq = 0x02 |
| 273 | }; |
| 274 | |
| 275 | /* Medium Error, Unrecovered read error */ |
| 276 | const struct SCSISense sense_code_READ_ERROR = { |
| 277 | .key = MEDIUM_ERROR, .asc = 0x11, .ascq = 0x00 |
| 278 | }; |
| 279 | |
| 280 | /* Not ready, Cause not reportable */ |
| 281 | const struct SCSISense sense_code_NOT_READY = { |
| 282 | .key = NOT_READY, .asc = 0x04, .ascq = 0x00 |
| 283 | }; |
| 284 | |
| 285 | /* Unit attention, Capacity data has changed */ |
| 286 | const struct SCSISense sense_code_CAPACITY_CHANGED = { |
| 287 | .key = UNIT_ATTENTION, .asc = 0x2a, .ascq = 0x09 |
| 288 | }; |
| 289 | |
| 290 | /* Unit attention, Power on, reset or bus device reset occurred */ |
| 291 | const struct SCSISense sense_code_RESET = { |
| 292 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x00 |
| 293 | }; |
| 294 | |
| 295 | /* Unit attention, SCSI bus reset */ |
| 296 | const struct SCSISense sense_code_SCSI_BUS_RESET = { |
| 297 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x02 |
| 298 | }; |
| 299 | |
| 300 | /* Unit attention, No medium */ |
| 301 | const struct SCSISense sense_code_UNIT_ATTENTION_NO_MEDIUM = { |
| 302 | .key = UNIT_ATTENTION, .asc = 0x3a, .ascq = 0x00 |
| 303 | }; |
| 304 | |
| 305 | /* Unit attention, Medium may have changed */ |
| 306 | const struct SCSISense sense_code_MEDIUM_CHANGED = { |
| 307 | .key = UNIT_ATTENTION, .asc = 0x28, .ascq = 0x00 |
| 308 | }; |
| 309 | |
| 310 | /* Unit attention, Reported LUNs data has changed */ |
| 311 | const struct SCSISense sense_code_REPORTED_LUNS_CHANGED = { |
| 312 | .key = UNIT_ATTENTION, .asc = 0x3f, .ascq = 0x0e |
| 313 | }; |
| 314 | |
| 315 | /* Unit attention, Device internal reset */ |
| 316 | const struct SCSISense sense_code_DEVICE_INTERNAL_RESET = { |
| 317 | .key = UNIT_ATTENTION, .asc = 0x29, .ascq = 0x04 |
| 318 | }; |
| 319 | |
| 320 | /* Data Protection, Write Protected */ |
| 321 | const struct SCSISense sense_code_WRITE_PROTECTED = { |
| 322 | .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x00 |
| 323 | }; |
| 324 | |
| 325 | /* Data Protection, Space Allocation Failed Write Protect */ |
| 326 | const struct SCSISense sense_code_SPACE_ALLOC_FAILED = { |
| 327 | .key = DATA_PROTECT, .asc = 0x27, .ascq = 0x07 |
| 328 | }; |
| 329 | |
| 330 | /* |
| 331 | * scsi_convert_sense |
| 332 | * |
| 333 | * Convert between fixed and descriptor sense buffers |
| 334 | */ |
| 335 | int scsi_convert_sense(uint8_t *in_buf, int in_len, |
| 336 | uint8_t *buf, int len, bool fixed) |
| 337 | { |
| 338 | SCSISense sense; |
| 339 | bool fixed_in; |
| 340 | |
| 341 | if (in_len == 0) { |
| 342 | return scsi_build_sense_buf(buf, len, SENSE_CODE(NO_SENSE), fixed); |
| 343 | } |
| 344 | |
| 345 | fixed_in = (in_buf[0] & 2) == 0; |
| 346 | if (fixed == fixed_in) { |
| 347 | memcpy(buf, in_buf, MIN(len, in_len)); |
| 348 | return MIN(len, in_len); |
| 349 | } else { |
| 350 | sense = scsi_parse_sense_buf(in_buf, in_len); |
| 351 | return scsi_build_sense_buf(buf, len, sense, fixed); |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | static bool scsi_sense_is_guest_recoverable(int key, int asc, int ascq) |
| 356 | { |
| 357 | switch (key) { |
| 358 | case NO_SENSE: |
| 359 | case RECOVERED_ERROR: |
| 360 | case UNIT_ATTENTION: |
| 361 | case ABORTED_COMMAND: |
| 362 | return true; |
| 363 | case NOT_READY: |
| 364 | case ILLEGAL_REQUEST: |
| 365 | case DATA_PROTECT: |
| 366 | /* Parse ASCQ */ |
| 367 | break; |
| 368 | default: |
| 369 | return false; |
| 370 | } |
| 371 | |
| 372 | switch ((asc << 8) | ascq) { |
| 373 | case 0x1a00: /* PARAMETER LIST LENGTH ERROR */ |
| 374 | case 0x2000: /* INVALID OPERATION CODE */ |
| 375 | case 0x2400: /* INVALID FIELD IN CDB */ |
| 376 | case 0x2600: /* INVALID FIELD IN PARAMETER LIST */ |
| 377 | |
| 378 | case 0x2104: /* UNALIGNED WRITE COMMAND */ |
| 379 | case 0x2105: /* WRITE BOUNDARY VIOLATION */ |
| 380 | case 0x2106: /* ATTEMPT TO READ INVALID DATA */ |
| 381 | case 0x550e: /* INSUFFICIENT ZONE RESOURCES */ |
| 382 | |
| 383 | case 0x0401: /* NOT READY, IN PROGRESS OF BECOMING READY */ |
| 384 | case 0x0402: /* NOT READY, INITIALIZING COMMAND REQUIRED */ |
| 385 | return true; |
| 386 | default: |
| 387 | return false; |
| 388 | } |
| 389 | } |
| 390 | |
| 391 | int scsi_sense_to_errno(int key, int asc, int ascq) |
| 392 | { |
| 393 | switch (key) { |
| 394 | case NO_SENSE: |
| 395 | case RECOVERED_ERROR: |
| 396 | case UNIT_ATTENTION: |
| 397 | return EAGAIN; |
| 398 | case ABORTED_COMMAND: /* COMMAND ABORTED */ |
| 399 | return ECANCELED; |
| 400 | case NOT_READY: |
| 401 | case ILLEGAL_REQUEST: |
| 402 | case DATA_PROTECT: |
| 403 | /* Parse ASCQ */ |
| 404 | break; |
| 405 | default: |
| 406 | return EIO; |
| 407 | } |
| 408 | switch ((asc << 8) | ascq) { |
| 409 | case 0x1a00: /* PARAMETER LIST LENGTH ERROR */ |
| 410 | case 0x2000: /* INVALID OPERATION CODE */ |
| 411 | case 0x2400: /* INVALID FIELD IN CDB */ |
| 412 | case 0x2600: /* INVALID FIELD IN PARAMETER LIST */ |
| 413 | return EINVAL; |
| 414 | case 0x2100: /* LBA OUT OF RANGE */ |
| 415 | case 0x2707: /* SPACE ALLOC FAILED */ |
| 416 | return ENOSPC; |
| 417 | case 0x2500: /* LOGICAL UNIT NOT SUPPORTED */ |
| 418 | return ENOTSUP; |
| 419 | case 0x3a00: /* MEDIUM NOT PRESENT */ |
| 420 | case 0x3a01: /* MEDIUM NOT PRESENT TRAY CLOSED */ |
| 421 | case 0x3a02: /* MEDIUM NOT PRESENT TRAY OPEN */ |
| 422 | return ENOMEDIUM; |
| 423 | case 0x2700: /* WRITE PROTECTED */ |
| 424 | return EACCES; |
| 425 | case 0x0401: /* NOT READY, IN PROGRESS OF BECOMING READY */ |
| 426 | return EINPROGRESS; |
| 427 | case 0x0402: /* NOT READY, INITIALIZING COMMAND REQUIRED */ |
| 428 | return ENOTCONN; |
| 429 | default: |
| 430 | return EIO; |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | int scsi_sense_buf_to_errno(const uint8_t *in_buf, size_t in_len) |
| 435 | { |
| 436 | SCSISense sense; |
| 437 | if (in_len < 1) { |
| 438 | return EIO; |
| 439 | } |
| 440 | |
| 441 | sense = scsi_parse_sense_buf(in_buf, in_len); |
| 442 | return scsi_sense_to_errno(sense.key, sense.asc, sense.ascq); |
| 443 | } |
| 444 | |
| 445 | bool scsi_sense_buf_is_guest_recoverable(const uint8_t *in_buf, size_t in_len) |
| 446 | { |
| 447 | SCSISense sense; |
| 448 | if (in_len < 1) { |
| 449 | return false; |
| 450 | } |
| 451 | |
| 452 | sense = scsi_parse_sense_buf(in_buf, in_len); |
| 453 | return scsi_sense_is_guest_recoverable(sense.key, sense.asc, sense.ascq); |
| 454 | } |
| 455 | |
| 456 | const char *scsi_command_name(uint8_t cmd) |
| 457 | { |
| 458 | static const char *names[] = { |
| 459 | [ TEST_UNIT_READY ] = "TEST_UNIT_READY", |
| 460 | [ REWIND ] = "REWIND", |
| 461 | [ REQUEST_SENSE ] = "REQUEST_SENSE", |
| 462 | [ FORMAT_UNIT ] = "FORMAT_UNIT", |
| 463 | [ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS", |
| 464 | [ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS/INITIALIZE ELEMENT STATUS", |
| 465 | /* LOAD_UNLOAD and INITIALIZE_ELEMENT_STATUS use the same operation code */ |
| 466 | [ READ_6 ] = "READ_6", |
| 467 | [ WRITE_6 ] = "WRITE_6", |
| 468 | [ SET_CAPACITY ] = "SET_CAPACITY", |
| 469 | [ READ_REVERSE ] = "READ_REVERSE", |
| 470 | [ WRITE_FILEMARKS ] = "WRITE_FILEMARKS", |
| 471 | [ SPACE ] = "SPACE", |
| 472 | [ INQUIRY ] = "INQUIRY", |
| 473 | [ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA", |
| 474 | [ MAINTENANCE_IN ] = "MAINTENANCE_IN", |
| 475 | [ MAINTENANCE_OUT ] = "MAINTENANCE_OUT", |
| 476 | [ MODE_SELECT ] = "MODE_SELECT", |
| 477 | [ RESERVE ] = "RESERVE", |
| 478 | [ RELEASE ] = "RELEASE", |
| 479 | [ COPY ] = "COPY", |
| 480 | [ ERASE ] = "ERASE", |
| 481 | [ MODE_SENSE ] = "MODE_SENSE", |
| 482 | [ START_STOP ] = "START_STOP/LOAD_UNLOAD", |
| 483 | /* LOAD_UNLOAD and START_STOP use the same operation code */ |
| 484 | [ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC", |
| 485 | [ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC", |
| 486 | [ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL", |
| 487 | [ READ_CAPACITY_10 ] = "READ_CAPACITY_10", |
| 488 | [ READ_10 ] = "READ_10", |
| 489 | [ WRITE_10 ] = "WRITE_10", |
| 490 | [ SEEK_10 ] = "SEEK_10/POSITION_TO_ELEMENT", |
| 491 | /* SEEK_10 and POSITION_TO_ELEMENT use the same operation code */ |
| 492 | [ WRITE_VERIFY_10 ] = "WRITE_VERIFY_10", |
| 493 | [ VERIFY_10 ] = "VERIFY_10", |
| 494 | [ SEARCH_HIGH ] = "SEARCH_HIGH", |
| 495 | [ SEARCH_EQUAL ] = "SEARCH_EQUAL", |
| 496 | [ SEARCH_LOW ] = "SEARCH_LOW", |
| 497 | [ SET_LIMITS ] = "SET_LIMITS", |
| 498 | [ PRE_FETCH ] = "PRE_FETCH/READ_POSITION", |
| 499 | /* READ_POSITION and PRE_FETCH use the same operation code */ |
| 500 | [ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE", |
| 501 | [ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE", |
| 502 | [ READ_DEFECT_DATA ] = "READ_DEFECT_DATA/INITIALIZE_ELEMENT_STATUS_WITH_RANGE", |
| 503 | /* READ_DEFECT_DATA and INITIALIZE_ELEMENT_STATUS_WITH_RANGE use the same operation code */ |
| 504 | [ MEDIUM_SCAN ] = "MEDIUM_SCAN", |
| 505 | [ COMPARE ] = "COMPARE", |
| 506 | [ COPY_VERIFY ] = "COPY_VERIFY", |
| 507 | [ WRITE_BUFFER ] = "WRITE_BUFFER", |
| 508 | [ READ_BUFFER ] = "READ_BUFFER", |
| 509 | [ UPDATE_BLOCK ] = "UPDATE_BLOCK", |
| 510 | [ READ_LONG_10 ] = "READ_LONG_10", |
| 511 | [ WRITE_LONG_10 ] = "WRITE_LONG_10", |
| 512 | [ CHANGE_DEFINITION ] = "CHANGE_DEFINITION", |
| 513 | [ WRITE_SAME_10 ] = "WRITE_SAME_10", |
| 514 | [ UNMAP ] = "UNMAP", |
| 515 | [ READ_TOC ] = "READ_TOC", |
| 516 | [ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT", |
| 517 | [ SANITIZE ] = "SANITIZE", |
| 518 | [ GET_CONFIGURATION ] = "GET_CONFIGURATION", |
| 519 | [ LOG_SELECT ] = "LOG_SELECT", |
| 520 | [ LOG_SENSE ] = "LOG_SENSE", |
| 521 | [ MODE_SELECT_10 ] = "MODE_SELECT_10", |
| 522 | [ RESERVE_10 ] = "RESERVE_10", |
| 523 | [ RELEASE_10 ] = "RELEASE_10", |
| 524 | [ MODE_SENSE_10 ] = "MODE_SENSE_10", |
| 525 | [ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN", |
| 526 | [ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT", |
| 527 | [ WRITE_FILEMARKS_16 ] = "WRITE_FILEMARKS_16", |
| 528 | [ EXTENDED_COPY ] = "EXTENDED_COPY", |
| 529 | [ ATA_PASSTHROUGH_16 ] = "ATA_PASSTHROUGH_16", |
| 530 | [ ACCESS_CONTROL_IN ] = "ACCESS_CONTROL_IN", |
| 531 | [ ACCESS_CONTROL_OUT ] = "ACCESS_CONTROL_OUT", |
| 532 | [ READ_16 ] = "READ_16", |
| 533 | [ COMPARE_AND_WRITE ] = "COMPARE_AND_WRITE", |
| 534 | [ WRITE_16 ] = "WRITE_16", |
| 535 | [ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16", |
| 536 | [ VERIFY_16 ] = "VERIFY_16", |
| 537 | [ PRE_FETCH_16 ] = "PRE_FETCH_16", |
| 538 | [ SYNCHRONIZE_CACHE_16 ] = "SPACE_16/SYNCHRONIZE_CACHE_16", |
| 539 | /* SPACE_16 and SYNCHRONIZE_CACHE_16 use the same operation code */ |
| 540 | [ LOCATE_16 ] = "LOCATE_16", |
| 541 | [ WRITE_SAME_16 ] = "ERASE_16/WRITE_SAME_16", |
| 542 | /* ERASE_16 and WRITE_SAME_16 use the same operation code */ |
| 543 | [ SERVICE_ACTION_IN_16 ] = "SERVICE_ACTION_IN_16", |
| 544 | [ WRITE_LONG_16 ] = "WRITE_LONG_16", |
| 545 | [ REPORT_LUNS ] = "REPORT_LUNS", |
| 546 | [ ATA_PASSTHROUGH_12 ] = "BLANK/ATA_PASSTHROUGH_12", |
| 547 | [ MOVE_MEDIUM ] = "MOVE_MEDIUM", |
| 548 | [ EXCHANGE_MEDIUM ] = "EXCHANGE MEDIUM", |
| 549 | [ READ_12 ] = "READ_12", |
| 550 | [ WRITE_12 ] = "WRITE_12", |
| 551 | [ ERASE_12 ] = "ERASE_12/GET_PERFORMANCE", |
| 552 | /* ERASE_12 and GET_PERFORMANCE use the same operation code */ |
| 553 | [ SERVICE_ACTION_IN_12 ] = "SERVICE_ACTION_IN_12", |
| 554 | [ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12", |
| 555 | [ VERIFY_12 ] = "VERIFY_12", |
| 556 | [ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12", |
| 557 | [ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12", |
| 558 | [ SEARCH_LOW_12 ] = "SEARCH_LOW_12", |
| 559 | [ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS", |
| 560 | [ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG/SET_STREAMING", |
| 561 | /* SEND_VOLUME_TAG and SET_STREAMING use the same operation code */ |
| 562 | [ READ_CD ] = "READ_CD", |
| 563 | [ READ_DEFECT_DATA_12 ] = "READ_DEFECT_DATA_12", |
| 564 | [ READ_DVD_STRUCTURE ] = "READ_DVD_STRUCTURE", |
| 565 | [ RESERVE_TRACK ] = "RESERVE_TRACK", |
| 566 | [ SEND_CUE_SHEET ] = "SEND_CUE_SHEET", |
| 567 | [ SEND_DVD_STRUCTURE ] = "SEND_DVD_STRUCTURE", |
| 568 | [ SET_CD_SPEED ] = "SET_CD_SPEED", |
| 569 | [ SET_READ_AHEAD ] = "SET_READ_AHEAD", |
| 570 | [ ALLOW_OVERWRITE ] = "ALLOW_OVERWRITE", |
| 571 | [ MECHANISM_STATUS ] = "MECHANISM_STATUS", |
| 572 | [ GET_EVENT_STATUS_NOTIFICATION ] = "GET_EVENT_STATUS_NOTIFICATION", |
| 573 | [ READ_DISC_INFORMATION ] = "READ_DISC_INFORMATION", |
| 574 | }; |
| 575 | |
| 576 | if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) { |
| 577 | return "*UNKNOWN*"; |
| 578 | } |
| 579 | return names[cmd]; |
| 580 | } |
| 581 | |
| 582 | int scsi_sense_from_errno(int errno_value, SCSISense *sense) |
| 583 | { |
| 584 | switch (errno_value) { |
| 585 | case 0: |
| 586 | return GOOD; |
| 587 | case EDOM: |
| 588 | return TASK_SET_FULL; |
| 589 | #if ENODEV != ENOMEDIUM |
| 590 | case ENODEV: |
| 591 | /* |
| 592 | * Some of the BSDs have ENODEV and ENOMEDIUM as synonyms. For |
| 593 | * everyone else, give a more severe sense code for ENODEV. |
| 594 | */ |
| 595 | #endif |
| 596 | #ifdef CONFIG_LINUX |
| 597 | /* These errno mapping are specific to Linux. For more information: |
| 598 | * - scsi_check_sense and scsi_decide_disposition in drivers/scsi/scsi_error.c |
| 599 | * - scsi_result_to_blk_status in drivers/scsi/scsi_lib.c |
| 600 | * - blk_errors[] in block/blk-core.c |
| 601 | */ |
| 602 | case EREMOTEIO: |
| 603 | *sense = SENSE_CODE(TARGET_FAILURE); |
| 604 | return CHECK_CONDITION; |
| 605 | case EBADE: |
| 606 | return RESERVATION_CONFLICT; |
| 607 | case ENODATA: |
| 608 | *sense = SENSE_CODE(READ_ERROR); |
| 609 | return CHECK_CONDITION; |
| 610 | #endif |
| 611 | case ENOMEDIUM: |
| 612 | *sense = SENSE_CODE(NO_MEDIUM); |
| 613 | return CHECK_CONDITION; |
| 614 | case ENOMEM: |
| 615 | *sense = SENSE_CODE(TARGET_FAILURE); |
| 616 | return CHECK_CONDITION; |
| 617 | case EINVAL: |
| 618 | *sense = SENSE_CODE(INVALID_FIELD); |
| 619 | return CHECK_CONDITION; |
| 620 | case ENOSPC: |
| 621 | *sense = SENSE_CODE(SPACE_ALLOC_FAILED); |
| 622 | return CHECK_CONDITION; |
| 623 | default: |
| 624 | *sense = SENSE_CODE(IO_ERROR); |
| 625 | return CHECK_CONDITION; |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | int scsi_sense_from_host_status(uint8_t host_status, |
| 630 | SCSISense *sense) |
| 631 | { |
| 632 | switch (host_status) { |
| 633 | case SCSI_HOST_NO_LUN: |
| 634 | *sense = SENSE_CODE(LUN_NOT_RESPONDING); |
| 635 | return CHECK_CONDITION; |
| 636 | case SCSI_HOST_BUSY: |
| 637 | return BUSY; |
| 638 | case SCSI_HOST_TIME_OUT: |
| 639 | *sense = SENSE_CODE(COMMAND_TIMEOUT); |
| 640 | return CHECK_CONDITION; |
| 641 | case SCSI_HOST_BAD_RESPONSE: |
| 642 | *sense = SENSE_CODE(LUN_COMM_FAILURE); |
| 643 | return CHECK_CONDITION; |
| 644 | case SCSI_HOST_ABORTED: |
| 645 | *sense = SENSE_CODE(COMMAND_ABORTED); |
| 646 | return CHECK_CONDITION; |
| 647 | case SCSI_HOST_RESET: |
| 648 | *sense = SENSE_CODE(RESET); |
| 649 | return CHECK_CONDITION; |
| 650 | case SCSI_HOST_TRANSPORT_DISRUPTED: |
| 651 | *sense = SENSE_CODE(I_T_NEXUS_LOSS); |
| 652 | return CHECK_CONDITION; |
| 653 | case SCSI_HOST_TARGET_FAILURE: |
| 654 | *sense = SENSE_CODE(TARGET_FAILURE); |
| 655 | return CHECK_CONDITION; |
| 656 | case SCSI_HOST_RESERVATION_ERROR: |
| 657 | return RESERVATION_CONFLICT; |
| 658 | case SCSI_HOST_ALLOCATION_FAILURE: |
| 659 | *sense = SENSE_CODE(SPACE_ALLOC_FAILED); |
| 660 | return CHECK_CONDITION; |
| 661 | case SCSI_HOST_MEDIUM_ERROR: |
| 662 | *sense = SENSE_CODE(READ_ERROR); |
| 663 | return CHECK_CONDITION; |
| 664 | } |
| 665 | return GOOD; |
| 666 | } |